Stapler



FIG. 1 is a side elevational view of a stapler showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof; and

FIG. 6 is a perspective view thereof.

The opposite side elevational view is a mirror image of FIG. 1. 

The ornamental design for a stapler, substantially as shown and described. 